heat_template_version: rocky

description: >
  OpenStack containerized HAproxy service for pacemaker

parameters:
  DockerHAProxyImage:
    description: image
    type: string
  DockerHAProxyConfigImage:
    description: The container image to use for the haproxy config_volume
    type: string
  ServiceData:
    default: {}
    description: Dictionary packing service data
    type: json
  ServiceNetMap:
    default: {}
    description: Mapping of service_name -> network name. Typically set
                 via parameter_defaults in the resource registry.  This
                 mapping overrides those in ServiceNetMapDefaults.
    type: json
  DefaultPasswords:
    default: {}
    type: json
  EndpointMap:
    default: {}
    description: Mapping of service endpoint -> protocol. Typically set
                 via parameter_defaults in the resource registry.
    type: json
  SSLCertificate:
    default: ''
    description: >
      The content of the SSL certificate (without Key) in PEM format.
    type: string
  PublicSSLCertificateAutogenerated:
    default: false
    description: >
      Whether the public SSL certificate was autogenerated or not.
    type: boolean
  EnablePublicTLS:
    default: true
    description: >
      Whether to enable TLS on the public interface or not.
    type: boolean
  DeployedSSLCertificatePath:
    default: '/etc/pki/tls/private/overcloud_endpoint.pem'
    description: >
        The filepath of the certificate as it will be stored in the controller.
    type: string
  RoleName:
    default: ''
    description: Role name on which the service is applied
    type: string
  RoleParameters:
    default: {}
    description: Parameters specific to the role
    type: json
  EnableInternalTLS:
    type: boolean
    default: false
  InternalTLSCAFile:
    default: '/etc/ipa/ca.crt'
    type: string
    description: Specifies the default CA cert to use if TLS is used for
                 services in the internal network.
  InternalTLSCRLPEMFile:
    default: '/etc/pki/CA/crl/overcloud-crl.pem'
    type: string
    description: Specifies the default CRL PEM file to use for revocation if
                 TLS is used for services in the internal network.
  HAProxyInternalTLSCertsDirectory:
    default: '/etc/pki/tls/certs/haproxy'
    type: string
  HAProxyInternalTLSKeysDirectory:
    default: '/etc/pki/tls/private/haproxy'
    type: string
  HAProxySyslogAddress:
    default: /dev/log
    description: Syslog address where HAproxy will send its log
    type: string
  HAProxySyslogFacility:
    default: local0
    description: Syslog facility HAProxy will use for its logs
    type: string
  ConfigDebug:
    default: false
    description: Whether to run config management (e.g. Puppet) in debug mode.
    type: boolean
  PcmkConfigRestartTimeout:
    default: 600
    description: Time in seconds to wait for a pcmk resource to restart when
                 a config change is detected and the resource is being restarted
    type: number
  ContainerCli:
    type: string
    default: 'docker'
    description: CLI tool used to manage containers.
    constraints:
      - allowed_values: ['docker', 'podman']
  DeployIdentifier:
    default: ''
    type: string
    description: >
      Setting this to a unique value will re-run any deployment tasks which
      perform configuration on a Heat stack-update.

conditions:
  puppet_debug_enabled: {get_param: ConfigDebug}
  public_tls_enabled:
    and:
    - {get_param: EnablePublicTLS}
    - or:
      - not:
          equals:
          - {get_param: SSLCertificate}
          - ""
      - equals:
          - {get_param: PublicSSLCertificateAutogenerated}
          - true
  internal_tls_enabled: {equals: [{get_param: EnableInternalTLS}, true]}

resources:

  ContainersCommon:
    type: ../containers-common.yaml

  HAProxyBase:
    type: ../../../puppet/services/pacemaker/haproxy.yaml
    properties:
      EndpointMap: {get_param: EndpointMap}
      ServiceData: {get_param: ServiceData}
      ServiceNetMap: {get_param: ServiceNetMap}
      DefaultPasswords: {get_param: DefaultPasswords}
      RoleName: {get_param: RoleName}
      RoleParameters: {get_param: RoleParameters}
      HAProxySyslogAddress: {get_param: HAProxySyslogAddress}
      HAProxySyslogFacility: {get_param: HAProxySyslogFacility}

outputs:
  role_data:
    description: Role data for the HAproxy role.
    value:
      service_name: {get_attr: [HAProxyBase, role_data, service_name]}
      config_settings:
        map_merge:
          - get_attr: [HAProxyBase, role_data, config_settings]
          - haproxy_docker: true
            tripleo::profile::pacemaker::haproxy_bundle::haproxy_docker_image: &haproxy_image {get_param: DockerHAProxyImage}
            tripleo::profile::pacemaker::haproxy_bundle::container_backend: {get_param: ContainerCli}
            # the list of directories that contain the certs to bind mount in the countainer
            # bind-mounting the directories rather than all the cert, key and pem files ensures
            # that docker won't create directories on the host when then pem files do not exist
            tripleo::profile::pacemaker::haproxy_bundle::tls_mapping: &tls_mapping
              list_concat:
              - if:
                - public_tls_enabled
                - - get_param: HAProxyInternalTLSKeysDirectory
                  - get_param: HAProxyInternalTLSCertsDirectory
                  - get_param: DeployedSSLCertificatePath
                - null
              - if:
                - internal_tls_enabled
                - - get_param: InternalTLSCAFile
                - null
            tripleo::profile::pacemaker::haproxy_bundle::internal_certs_directory: {get_param: HAProxyInternalTLSCertsDirectory}
            tripleo::profile::pacemaker::haproxy_bundle::internal_keys_directory: {get_param: HAProxyInternalTLSKeysDirectory}
            # disable the use CRL file until we can restart the container when the file expires
            tripleo::haproxy::crl_file: null
            tripleo::profile::pacemaker::haproxy_bundle::haproxy_docker_image: &haproxy_image_pcmklatest
              list_join:
                - ':'
                - - yaql:
                      data: {get_param: DockerHAProxyImage}
                      expression: $.data.rightSplit(separator => ":", maxSplits => 1)[0]
                  - 'pcmklatest'
      service_config_settings: {get_attr: [HAProxyBase, role_data, service_config_settings]}
      # BEGIN DOCKER SETTINGS
      puppet_config:
        config_volume: haproxy
        puppet_tags: haproxy_config
        step_config:
          list_join:
            - "\n"
            - - "exec {'wait-for-settle': command => '/bin/true' }"
              - "class tripleo::firewall(){}; define tripleo::firewall::rule( $port = undef, $dport = undef, $sport = undef, $proto = undef, $action = undef, $state = undef, $source = undef, $iniface = undef, $chain = undef, $destination = undef, $extras = undef){}"
              - "['pcmk_bundle', 'pcmk_resource', 'pcmk_property', 'pcmk_constraint', 'pcmk_resource_default'].each |String $val| { noop_resource($val) }"
              - 'include ::tripleo::profile::pacemaker::haproxy_bundle'
        config_image: {get_param: DockerHAProxyConfigImage}
        volumes: &deployed_cert_mount
          yaql:
            expression: $.data.select($+":"+$+":ro")
            data: *tls_mapping
      kolla_config:
        /var/lib/kolla/config_files/haproxy.json:
          command: /usr/sbin/haproxy-systemd-wrapper -f /etc/haproxy/haproxy.cfg
          config_files:
            - source: "/var/lib/kolla/config_files/src/*"
              dest: "/"
              merge: true
              preserve_properties: true
              optional: true
            - source: "/var/lib/kolla/config_files/src-tls/*"
              dest: "/"
              merge: true
              optional: true
              preserve_properties: true
          permissions:
            - path: /var/lib/haproxy
              owner: haproxy:haproxy
              recurse: true
            - path:
                list_join:
                - ''
                - - {get_param: HAProxyInternalTLSCertsDirectory}
                  - '/*'
              owner: haproxy:haproxy
              perm: '0600'
              optional: true
            - path:
                list_join:
                - ''
                - - {get_param: HAProxyInternalTLSKeysDirectory}
                  - '/*'
              owner: haproxy:haproxy
              perm: '0600'
              optional: true
      docker_config_scripts: {get_attr: [ContainersCommon, docker_config_scripts]}
      docker_config:
        step_2:
          haproxy_restart_bundle:
            start_order: 2
            detach: false
            net: host
            ipc: host
            user: root
            config_volume: haproxy
            command:
              - '/usr/bin/bootstrap_host_exec'
              - 'haproxy'
              - str_replace:
                  template:
                    'if /usr/sbin/pcs resource show haproxy-bundle; then /usr/sbin/pcs resource restart --wait=PCMKTIMEOUT haproxy-bundle; echo "haproxy-bundle restart invoked"; fi'
                  params:
                    PCMKTIMEOUT: {get_param: PcmkConfigRestartTimeout}
            image: {get_param: DockerHAProxyImage}
            volumes:
              list_concat:
                - {get_attr: [ContainersCommon, volumes]}
                -
                  - /etc/corosync/corosync.conf:/etc/corosync/corosync.conf:ro
                  - /var/lib/config-data/puppet-generated/haproxy/:/var/lib/kolla/config_files/src:ro
          haproxy_init_bundle:
            start_order: 3
            detach: false
            net: host
            ipc: host
            user: root
            privileged: true
            command: # '/docker_puppet_apply.sh "STEP" "TAGS" "CONFIG" "DEBUG"'
              list_concat:
                - - '/docker_puppet_apply.sh'
                  - '2'
                  - 'file,file_line,concat,augeas,tripleo::firewall::rule,pacemaker::resource::bundle,pacemaker::property,pacemaker::resource::ip,pacemaker::resource::ocf,pacemaker::constraint::order,pacemaker::constraint::colocation'
                  - 'include ::tripleo::profile::base::pacemaker; include ::tripleo::profile::pacemaker::haproxy_bundle'
                - if:
                  - puppet_debug_enabled
                  - - '--debug'
                  - - ''
            image: {get_param: DockerHAProxyImage}
            volumes:
              list_concat:
                - {get_attr: [ContainersCommon, docker_puppet_apply_volumes]}
                - *deployed_cert_mount
                -
                  # puppet saves iptables rules in /etc/sysconfig
                  - /etc/sysconfig:/etc/sysconfig:rw
                  # saving rules require accessing /usr/libexec/iptables/iptables.init, just bind-mount
                  # the necessary bit and prevent systemd to try to reload the service in the container
                  - /usr/libexec/iptables:/usr/libexec/iptables:ro
                  - /usr/libexec/initscripts/legacy-actions:/usr/libexec/initscripts/legacy-actions:ro
                  - /etc/corosync/corosync.conf:/etc/corosync/corosync.conf:ro
            environment:
              # NOTE: this should force this container to re-run on each
              # update (scale-out, etc.)
              - list_join:
                  - ''
                  - - 'TRIPLEO_DEPLOY_IDENTIFIER='
                    - {get_param: DeployIdentifier}
      host_prep_tasks:
        - {get_attr: [HAProxyBase, role_data, host_prep_tasks]}
        - name: Check if rsyslog exists
          shell: systemctl is-active rsyslog
          register: rsyslog_config
        - when: rsyslog_config.rc == 0
          block:
            - name: Forward logging to haproxy.log file
              blockinfile:
                content: |
                  if $syslogfacility-text == '{{facility}}' and $programname == 'haproxy' then -/var/log/containers/haproxy/haproxy.log
                  & stop
                create: yes
                path: /etc/rsyslog.d/openstack-haproxy.conf
              vars:
                facility: {get_param: HAProxySyslogFacility}
              register: logconfig
            - name: restart rsyslog service after logging conf change
              service:
                name: rsyslog
                state: restarted
              when: logconfig is changed
        - name: create persistent directories
          file:
            path: "{{ item.path }}"
            state: directory
            setype: "{{ item.setype }}"
          with_items:
            - { 'path': /var/log/containers/haproxy, 'setype': var_log_t }
            - { 'path': /var/lib/haproxy, 'setype': svirt_sandbox_file_t }
        - name: haproxy logs readme
          copy:
            dest: /var/log/haproxy/readme.txt
            content: |
              Log files from the haproxy containers can be found under
              /var/log/containers/haproxy.
          ignore_errors: true
      metadata_settings:
        get_attr: [HAProxyBase, role_data, metadata_settings]
      deploy_steps_tasks:
        - name: HAproxy tag container image for pacemaker
          when: step|int == 1
          import_role:
            name: tripleo-container-tag
          vars:
            container_image: {get_param: DockerHAProxyImage}
            container_image_latest: *haproxy_image_pcmklatest
      update_tasks:
        - name: Set HAProxy upgrade facts
          block: &haproxy_update_upgrade_facts
          - name: Check for haproxy Kolla configuration
            stat:
              path: /var/lib/config-data/puppet-generated/haproxy
            register: haproxy_kolla_config
          - name: Check if haproxy is already containerized
            set_fact:
              haproxy_containerized: "{{haproxy_kolla_config.stat.isdir | default(false)}}"
          - name: set is_bootstrap_node fact
            tags: common
            set_fact: is_bootstrap_node={{haproxy_short_bootstrap_node_name|lower == ansible_hostname|lower}}
        - name: Mount TLS cert if needed
          when:
            - step|int == 1
            - haproxy_containerized|bool
            - is_bootstrap_node
          block:
            - name: Check haproxy public certificate configuration in pacemaker
              command: cibadmin --query --xpath "//storage-mapping[@id='haproxy-cert']"
              ignore_errors: true
              register: haproxy_cert_mounted
            - name: Disable the haproxy cluster resource
              pacemaker_resource:
                resource: haproxy-bundle
                state: disable
                wait_for_resource: true
              register: output
              retries: 5
              until: output.rc == 0
              # rc == 6 means the configuration doesn't exist in the CIB
              when: haproxy_cert_mounted.rc == 6
            - name: Set HAProxy public cert volume mount fact
              set_fact:
                haproxy_public_cert_path: {get_param: DeployedSSLCertificatePath}
                haproxy_public_tls_enabled: {if: [public_tls_enabled, true, false]}
            - name: Add a bind mount for public certificate in the haproxy bundle
              command: pcs resource bundle update haproxy-bundle storage-map add id=haproxy-cert source-dir={{ haproxy_public_cert_path }} target-dir=/var/lib/kolla/config_files/src-tls/{{ haproxy_public_cert_path }} options=ro
              when: haproxy_cert_mounted.rc == 6 and haproxy_public_tls_enabled|bool
            - name: Enable the haproxy cluster resource
              pacemaker_resource:
                resource: haproxy-bundle
                state: enable
                wait_for_resource: true
              register: output
              retries: 5
              until: output.rc == 0
              when: haproxy_cert_mounted.rc == 6
        - name: Haproxy fetch and retag container image for pacemaker
          when: step|int == 2
          block: &haproxy_fetch_retag_container_tasks
            - name: Get docker Haproxy image
              set_fact:
                docker_image: {get_param: DockerHAProxyImage}
                docker_image_latest: *haproxy_image_pcmklatest
            - name: Get previous Haproxy image id
              shell: "{{container_cli}} images | awk '/haproxy.* pcmklatest/{print $3}' | uniq"
              register: haproxy_image_id
            - block:
                - name: Get a list of container using Haproxy image
                  shell: "{{container_cli}} ps -a -q -f 'ancestor={{haproxy_image_id.stdout}}'"
                  register: haproxy_containers_to_destroy
                # It will be recreated with the delpoy step.
                - name: Remove any container using the same Haproxy image
                  shell: "{{container_cli}} rm -fv {{item}}"
                  with_items: "{{ haproxy_containers_to_destroy.stdout_lines }}"
                - name: Remove previous Haproxy images
                  shell: "{{container_cli}} rmi -f {{haproxy_image_id.stdout}}"
              when:
                - haproxy_image_id.stdout != ''
            - name: Pull latest Haproxy images
              command: "{{container_cli}} pull {{docker_image}}"
            - name: Retag pcmklatest to latest Haproxy image
              import_role:
                name: tripleo-container-tag
              vars:
                container_image: "{{ docker_image }}"
                container_image_latest: "{{ docker_image_latest }}"
            # Got to check that pacemaker_is_active is working fine with bundle.
            # TODO: pacemaker_is_active resource doesn't support bundle.
      upgrade_tasks:
        - when: step|int == 0
          tags: common
          block:
            - name: Get docker haproxy image
              set_fact:
                haproxy_docker_image_latest: *haproxy_image_pcmklatest
            - name: Set HAProxy upgrade facts
              block: *haproxy_update_upgrade_facts
            - name: Prepare the switch to new haproxy container image name in pacemaker
              when: haproxy_containerized|bool
              block:
                - name: Get haproxy image id currently used by pacemaker
                  shell: "{{container_cli}} images | awk '/haproxy.* pcmklatest/{print $3}' | uniq"
                  register: haproxy_current_pcmklatest_id
                - name: Temporarily tag the current haproxy image id with the upgraded image name
                  import_role:
                    name: tripleo-container-tag
                  vars:
                    container_image: "{{haproxy_current_pcmklatest_id.stdout}}"
                    container_image_latest: "{{haproxy_docker_image_latest}}"
                  when: haproxy_current_pcmklatest_id.stdout != ''
            - name: Check haproxy-bundle cluster resource status
              pacemaker_resource:
                resource: haproxy-bundle
                state: show
                check_mode: false
              ignore_errors: true
              register: haproxy_pcs_res_result
            - name: Set fact haproxy_pcs_res
              set_fact:
                haproxy_pcs_res: "{{haproxy_pcs_res_result|succeeded}}"
        - name: haproxy baremetal to container upgrade tasks
          when:
            - step|int == 1
            - not haproxy_containerized|bool
          block:
            - name: Check cluster resource status
              pacemaker_resource:
                resource: {get_attr: [HAProxyBase, role_data, service_name]}
                state: started
                check_mode: true
              ignore_errors: true
              register: haproxy_res
            - when: (is_bootstrap_node) and (haproxy_res|succeeded)
              block:
                - name: Disable the haproxy cluster resource.
                  pacemaker_resource:
                    resource: {get_attr: [HAProxyBase, role_data, service_name]}
                    state: disable
                    wait_for_resource: true
                  register: output
                  retries: 5
                  until: output.rc == 0
                - name: Delete the stopped haproxy cluster resource.
                  pacemaker_resource:
                    resource: {get_attr: [HAProxyBase, role_data, service_name]}
                    state: delete
                    wait_for_resource: true
                  register: output
                  retries: 5
                  until: output.rc == 0
        - name: Update haproxy pcs resource bundle for new container image
          when:
            - step|int == 1
            - haproxy_containerized|bool
            - is_bootstrap_node
            - haproxy_pcs_res|bool
          block:
            - name: Disable the haproxy cluster resource before container upgrade
              pacemaker_resource:
                resource: haproxy-bundle
                state: disable
                wait_for_resource: true
              register: output
              retries: 5
              until: output.rc == 0
            - name: Expose HAProxy stats socket on the host and mount TLS cert if needed
              block:
                - name: Check haproxy stats socket configuration in pacemaker
                  command: cibadmin --query --xpath "//storage-mapping[@id='haproxy-var-lib']"
                  ignore_errors: true
                  register: haproxy_stats_exposed
                - name: Check haproxy public certificate configuration in pacemaker
                  command: cibadmin --query --xpath "//storage-mapping[@id='haproxy-cert']"
                  ignore_errors: true
                  register: haproxy_cert_mounted
                - name: Add a bind mount for stats socket in the haproxy bundle
                  command: pcs resource bundle update haproxy-bundle storage-map add id=haproxy-var-lib source-dir=/var/lib/haproxy target-dir=/var/lib/haproxy options=rw
                  # rc == 6 means the configuration doesn't exist in the CIB
                  when: haproxy_stats_exposed.rc == 6
                - name: Set HAProxy public cert volume mount fact
                  set_fact:
                    haproxy_public_cert_path: {get_param: DeployedSSLCertificatePath}
                    haproxy_public_tls_enabled: {if: [public_tls_enabled, true, false]}
                - name: Add a bind mount for public certificate in the haproxy bundle
                  command: pcs resource bundle update haproxy-bundle storage-map add id=haproxy-cert source-dir={{ haproxy_public_cert_path }} target-dir=/var/lib/kolla/config_files/src-tls/{{ haproxy_public_cert_path }} options=ro
                  when:
                    - haproxy_cert_mounted.rc == 6
                    - haproxy_public_tls_enabled|bool
            - name: Update the haproxy bundle to use the new container image name
              command: "pcs resource bundle update haproxy-bundle container image={{haproxy_docker_image_latest}}"
            - name: Enable the haproxy cluster resource
              pacemaker_resource:
                resource: haproxy-bundle
                state: enable
                wait_for_resource: true
              register: output
              retries: 5
              until: output.rc == 0
        - name: Retag the pacemaker image if containerized
          when:
            - step|int == 3
            - haproxy_containerized|bool
          block: *haproxy_fetch_retag_container_tasks